Hi Maciej Chow,
Our cameras use a 'Wi-Fi Direct' connection between the 322GW and your S10. This enables your S10 to still be connected to an exterior Wi-Fi (for instance your home or office Wi-Fi access point), or 3G/4G if away from Wi-Fi. Our Dashcam videos take a long time to download because of the high quality of footage they capture. If you want quicker downloads, we'd recommend going into to the app, to 'menu'-'app settings'-'enable low resolution downloads'. This will allow you to quickly download lower-quality videos on your phone for quick viewing, whilst still enabling you to download high resolution videos in the necessary cases. If you'd like to download a large quantity of high-resolution recordings, we'd suggest inserting the SD directly into a computer or laptop as it will be significantly quicker, but sounds like you got to that conclusion by yourself.
Hope that makes things a little clearer for you.
Regards,
Millie- Nextbase